hessian writes: "To be sure, America's tech economy has long depended on foreign-born workers. "Immigrants have founded 40 percent of companies in the tech sector that were financed by venture capital and went on to become public in the U.S., among them Yahoo, eBay, Intel, and Google," writes Laszlo Bock, Google's senior VP of "people operations," which, along with other tech giants such as HP and Microsoft, strongly supports a big increase in H-1B visas. "In 2012, these companies employed roughly 560,000 workers and generated $63 billion in sales."

But in reality, most of today's H-1B workers don't stick around to become the next Albert Einstein or Sergey Brin. ComputerWorld revealed last week that the top 10 users of H-1B visas last year were all offshore outsourcing firms such as Tata and Infosys. Together these firms hired nearly half of all H-1B workers, and less than 3 percent of them applied to become permanent residents. "The H-1B worker learns the job and then rotates back to the home country and takes the work with him," explains Ron Hira, an immigration expert who teaches at the Rochester Institute of Technology. None other than India's former commerce secretary once dubbed the H-1B the "outsourcing visa.""